<!doctype html>
<html>
    <head>
        <meta http-equiv="content-type" content="text/html"; charset="utf-8">
   <title>登录界面</title>
    </head>
    <!--这是注释-->
    <body>
        <form action="do_login.php" method="POST">
            <div>
                名称：<input type="text" name="Username" value="" placeholder="请输入"/>
            </div>
            <div>
                密码：<input type="password" name="Password"  title="至少要4个字符" value=""/>
            </div>

            <input type="reset" value="重置" />
            <input type="submit" name="Submit" value="提交"/>
        </form>        
    </body>

</html>